STAKFISHES OF THE PHILIPPINE SEAS. 273 



plates with small spaced granules. Viewed from the inner or coelomic 

 side the abactinal plates form very regular longitudinal series, those 

 of the median radial being conspicuously the largest. Most of the 

 plates are provided with short lobes, but they are of irregular occur- 

 rence. On many of the median radial plates there are 6 short lobes. 



Superomarginal plates narrow abactinally, the sixth meeting its 

 fellow in the median line of ray. Interbrachial plates forming a 

 slight to decided, narrow, bevel; fifth and sixth the largest of series; 

 dorsal surface of first 4 plates about as wide or slightly narrower 

 than long; fifth and sixth slighth'^ wider than long, and then the 

 width gradually decreases, the plates from the eighth being longer 

 than wide. Edge of ray an abrupt, rounded, right angle, the height 

 of plates being a little more than half the width (and on ray rela- 

 tively lower than in mucronatus) . Granules slightly spaced, sub- 

 spherical, becoming low conical on the lateral face of plate. Ter- 

 minal plate small, ovoid, about as wide as long, pointed proximally, 

 and rounded distally. 



Inferomarginals narrow, the second, viewed from below, as wide 

 as long, and the succeeding ones increasingly longer than wide. On 

 the outer half of ray the plates are extremely narrow actinally, the 

 surface being rather evenly rounded between the inner and outer 

 edge of the plate. Ninth to nineteenth inferomarginals (10 nearest 

 middle of ray) corresponding to 14 adambulacrals. Granules coarser 

 on actinal than on lateral face, subspherical to depressed acorn shape. 

 In the interbrachia of the type-specimen some of the lateral granules 

 are submucronate. 



Actinal intermediate plates in 4 chevrons, with an odd plate in 

 the interradius. Granules fairly coarse, spaced, the central slightly 

 the largest, and in form depressed conical or acorn-shaped. A 

 variety has smaller more spaced granules. 



Apophysis or projecting angle appearing on the first or the second 

 adambulacral and becoming prominent on the fifth or sixth. First 

 and second plates with 6 furrow spines, which increase on the ray 

 to 10 or 11, the lateral members being often granuliform, the others 

 of the usual shape, the median compressed with edge to furrow, and 

 the distal 3 or 4 with flat side thereto. Subambulacral granules, 

 acorn-shaped, 6 to 12 in 2 or 3 series proximally, and 2 distally, 1 or 2 

 granules in the inner angle being slightly enlarged. Many of the 

 plates as far as middle of ray have a rather conspicuous pedicellaria 

 with 2 or 3 incurved jaws situated on the inner part of the plate. 



Mouth plates with 8 to 10 marginal and about the same number 

 of suboral spines, the former compressed, the latter more conical, 

 and graduated in length to conical granules on the outer end of 

 plate. The plates seem to be larger than in mucronatus. but as the 



